Markie, looks like you missed out CU, and used CCU instead, EEBAD should be EEBADS, Ra should resistance of earth electrode only.
Then there's just a couple you missed:
ADS: Automatic Disconnection of Supply,
AWA: Aluminium Wired Armour,
CT: Current Transformer,
DB: Distribution Board,
EFLI: Earth Fault Loop Impedance,
ELV: Extra Low Voltage,
EMT: Earth Marshaling Terminal,
ESQCR: Electricity Safety, Quality and Continuity Regulations,
IET: Institute of Engineering and Technology,
FELV: Functional Extra Low Voltage,
HV: High Voltage,
LSC: Luminair Supporting Coupler,
LV: Low Voltage,
MEN: Multiple Earth Neutral connection (used abroad to describe PME),
MET: Main Earth Terminal,
MV: Medium Voltage (not used in this country anymore),
PBC: Protective Bonding Conductor,
PE: Protective Earthing,
PEFC: Prospective Earth Fault,
PFC: Prospective Fault Current,
PME: Protective Multiple Earthing,
PNB: Protective Neutral Bonding,
PSCC: Prospective Short Circuit Current,
PV: Pholtaic Voltage (solar power),
R1: Resistance of line conductor,
R2: Resistance of earth conductor,
r1: resistance of line conductor (taken at socket-outlets on RFC),
r2: resistance of earth conductor (taken at socket-outlets on RFC),
rn: resistance of neutral conductor (taken at socket-outlets on RFC), RFC: Ring Final Circuit,
SFCU: Switched Fused Connection Unit, SNE: Separate Neutral and Earth (cable), So: Socket-outlet,
SRCD: Socket-outlet incorporating an RCD, IT: Information Technology, IT: Impedance Earthing (Terra),
TN: Terra Neutral, TN-C:
Terra Neutral Combined,
TN-S: Terra Neutral Separated,
TN-C-S: Terra Neutral Combined then Separated,
TT: Terra Terra,
Tx: Transformer,
Zdb: Zs at DB.